Table 1.
Branches with evidence of episodic positive selection (P < 0.01) based on branch-site REL and BUSTED analyses
| Gene | Brancha | Percent of sites under positive selectiond | ω +b | P-valuec | ω 3 e | P-value |
|---|---|---|---|---|---|---|
| vic2 | a | 23 | 95 | <0.0001 | 87.7 | 2.0 × 10-16 |
| b | 4 | 5715 | <0.0001 | – | – | |
| c | 9 | 14 | 0.001 | – | – | |
| d | 6 | 19 | 0.007 | – | – | |
| pix6 | a | 26 | 10,000 | <0.0001 | 3330 | 1.0 × 10-8 |
| vic6 | None | – | – | – | 1.3 | >0.5 |
| Helicase-like | None | – | – | – | 1.0 | >0.5 |
a Name of branch refers to those in Fig. 1
b ω+ (dN/dS) for positively selected sites along the branch estimated using branch-site REL (Kosakovsky Pond and Frost 2005)
c P-value for episodic positive selection along the branch corrected by the Holm–Bonferroni method
d Proportion of sites along the branch inferred to show positive selection using branch-site REL
e ω3, tests for positive selection of the branch joining alleles 1 and 2 using BUSTED under the null hypothesis of neutrality (Murrell et al. 2015). For the helicase-like gene, this test is between alleles 1 and 2 only in C. parasitica